Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Information for Plans with Accumulated Benefit Obligations and Projected Benefit Obligations in Excess of Plan Assets (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 728.6	$ 661.6
Accumulated benefit obligation	712.5	648.8
Fair value of plan assets	525.6	481.7
U.S.
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	202.2	194.1
Accumulated benefit obligation	202.2	194.1
Fair value of plan assets	141.6	137.1
International
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	526.4	467.5
Accumulated benefit obligation	510.3	454.7
Fair value of plan assets	$ 384.0	$ 344.6